Flour-bolter.



No; 65!,338 Patented June l2, I900.

. F.- w.. BROWN.

FLOUR BOLTER.

7 (Application filed Mar. 22, 1899.) (No Model.)

3 Sheets-Sheet l.

p flLEllllllW-lil WITNESSES: f7 //v VEN roe A TTOHNE'YS.

' Pafented Julie. *2, I900. F. w. BROWN. rLouR BOLTEB.

(Aimplication filed Mar. 22, 1899.)

3 Sheetsr-Sheet 2.

(No Model.)

//v VENTOH W/ TN E SSE S A TTOBNE YS.

THE moms PETERS to, mom-um No. 65l,3-38. I Patented June I2, I900.

F. W. BROWN.

FLOUR BOLTER.

(Application filed Mai. 22, 1899.)

(No Model.)

3 Sheets-Sheet 3.

WITNESSES: 7i -5 //vv/vr 0 4 ,1 I I I A TTOHNEYS.

THE NORRIS FUERS c0, PHOTO L|THO., wAsmNaTan. n. c

STATES PATENT @FFIQE.

FREDERICK /V. BROWN, OF LEE BELT), \VEST VIRGINIA.

FLOUR-BOLTER.

SPECIFICATION forming part of Letters Patent No. 651,338, dated June 12,1900.

Application filed Mar h 22. 1899- To all whom it may concern.-

Be itknown that I, FREDERICK W. BROWN, of Lee Bell, in the county ofRandolph and State of West Virginia, have invented anew and ImprovedFlour-Bolter, of which the following is a full, clear, and exactdescription.

My invention relates to an improvement in flour-bolters of that classwhich are given a bodily movement in a circular path, and comprisesnovel features which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forminga part ofthis specification, in which similarcharact'ers of reference indicatecorresponding parts in all the views.

Figure 1 is a plan View of the bolter. Fig. 2 is a sectional elevationtaken on theline 2 2 of Fig. 1. Fig. 3 is a sectional elevation taken onthe line 3 3 in Fig. 4 through one of the bolting-screens and chutes andthe cut-off which is placed thereon. Figs. 4, 5, and 6 aresectional-elevations of the bolter, taken, respectively, on the lines 44, 5 5, and 6 6 of Fig. 1; and Figs. 7 and 8 are respectively a plan andan elevation of a plate which is secured to the bolter and surrounds thecrank by which the bolter is made to move in a circle.

One object of my invention is to construct a condensed machine whichwill have large capacity in a small space and which will also beeasilyaccessible for repairs and to provide the same with a cut-off, bymeans of which the area of the bolting-surface may be adjusted tocorrespond with the condition ofthe stock and the rapidity ofits'bolting.

Another object is to provide means by which the bolter may be balancedwhilerun ning, so as to adjust it for different conditions. v

The bolter in general is of a triangular form, the bolting-chambers Abeing rectangular in cross-section and connected at their ends, so as toform atriangle. Three of these bolting-chambers are thus used, thechamber A being the one which is shown in section in Fig. 4, the chamberA in Fig. 5, and the chamber A in Fig. 6. These bolting-chambers containa series of sieves and bolting-cloths, together with the necessarychutes for conveying the flour, and are connected at their ends, so-asto discharge into the end of the another set of rolls.

erial No. 710,075. (No model.) v

bolter for treatment in another set of rolls,

this is' done by makingthe discharge-opening at the end of the bolter,where spouts a are secured and from which the stock is conveyed bysuitable spouts to the point required. The openings through the sidewall of one bolting-chamber into any of the next chambers is indicatedby a in; Figs. 4, 5, and

6. It is evident that the stock may be passed through as many of thesechambers in succession as desired or discharged at any time from the endof the bolter and conveyed to The exact manner of passing the stockthrough the bolter and the rolls is not thought to be essential to anexplanation of my present invention and has therefore not beenillustrated and will not be described in detail. The exact course of thestock would vary somewhat, according to the circumstances of differentcases. It may be varied to meetthe ideas of the miller; but I will heresay that the plan' here described is to handle five reductions-yet asmany more, or even as many as may be desired,

may be handled in this style of bolter'and .at. the same time handlingeach reduction separately one from the other.

The different sets of screens and'boltingcloths, with their chutes, areindicated by numerals running from 1 "to 18 and are shown in Figs. 4, 5,and 6. These numerals are arranged to indicate the course of the 1 stockby what is considered a preferable manner of treatment. This may,however, be varied, if desired. When the stock is returned from therolls to the bolter to be introduced into one of the lowerbolting-frames, it is passed through the end of one of theboltingchambers, as indicated at a in Figs. 4 and 6 and a in Fig. 5.

The bolting-chambers are suspended by three links H, which are shown inFigs. 1 and 2. These links are pivotally connected with the outer endsof the chambers and also to the ends of cross-bars I, which are suitablysupported upon the framework of the bolter. This framework consists of abase'G, vertical posts G, and the cross-bars I, from which the links aresuspended. This leaves the bolter free to be swung in a horizontalplane.

At the inner sides of the bolting-chambers is secured a plate O,(shownin detail in Figs. 7and 8,) which is provided with a removable cap P,adapted to secure the plate to the crank J of a vertical shaft J, whichshaft is provided with a pulley J, by means of which it may be rotated.As the shaft is rotated it will by the connection of the plate 0therewith and to the bolter swing the bolter in a circular path, thusagitating the bolter and the stock therein, seats to cause the stock tofeed down the inclined bolting-frames.

The operation of the bolter, like all other bolters, will vary somewhatunder different conditions of the weather and the grain from which thestock is made. \Vhen the weather or the grain is dry, the stock willpass through the bolter more rapidly than when either is damp, and it istherefore advisable to have the bolting-cloths of sutfieient capacity tocare for the stock which will pass through the sieves when the weatheror the stock is damp and to provide a cu t-off to decrease the amount ofbolting-surface when the stock is dry. This decrease in thebolting-surface to secure the best results must be provided for at theupper ends of the bolting-cloths. This is secured by the cut-01f O.(Shown in Figs. 4, 5, and 6.) This cut-off is shown in cross-section ona larger scale in Fig. 3 and consists of a plate D, which is providedwith central openings d, the two adjust-able plates E and E, and thethreaded rod F, which extends out through the adjacent; or overlappingchamber and by means of which said adjustable plates are operated. Theplate D is slightly concaved on its upper surface, so that the stockwill work toward the center and into the openings (1. The plates E and Eare mounted to slide in a groove in cleats d, secured to the undersurface of the plate D. Each of the plates E and E is provided withdownward ly-extending locking-arms e and c, which are threaded toreceive the threaded rod F. These arms are at opposite ends of thecut-off plates and are provided with threads of different pitch, as arealso the threaded sections of the rod F. That portion of the rod and thearm 6 which operates the cut-off plate E is provided with a thread thathas half the pitch of that which acts upon the cut-off plate E, so thatwhen the rod is turned in one direction the plates will be extendedpartially over the bolting-cloth, as shown in Fig.4, the plate E beingmoved with half the speedof the plate E, so that the plates will reachthe end of their travel at the same time.

When the rod is turned in the opposite direction, the plates will bemoved in the opposite direction from over the bolting-cloth and will lieone over the other in the end of the adjacent or overlapping chamber,thereby permitting the entire surface of the bolting-cloth to be used.The outer end of the rod F is provided with a crank f or other suitablemeans by which it may be turned.

A limited number of the cut-off devices are provided, the same beingused only where the change is made from a sieve to a bolting cloth orwhere the material has just been passed through a sieve after beingreceived from a set of rolls. Single plates may be used where a lessamount of cutting off is considered sufficient. Where bolting-clothsonly are used, the plate D and the cut-off devices are omitted from thedevice, as it is shown in Fig. 3, the bolting-cloth B and the chute B,which is concaved in its upper surface, being used alone. In some cases,as with the chutes 13 and 18, (shown in Figs. 6 and 5,) the chute B onlyis used. In this case it is simply desired to transfer the stock orflour from one end of the bolting-chamber to the other. This is in orderthat the flour and off-fall which is leaving the bolter or stock that isleaving the bolter for further treatment in the rolls may each beseparately discharged at one of the three places for leaving the bolter.With bolters of this character which have a rotary movement it is necessary to provide some counterbalance to prevent the bolter from rackingthe machinery and the mill itself. Such counter balance is usuallyprovided in a wheel K, which is attached to the power-shaft J. I haveshown herein a device of this character which may be adjusted while thebolter is in operation, and thus maintain accurate balance under varyingcircumstances. When the stock is a little damp, more stock will be heldin the bolter than when the stock is dry, which will result in changingthe balance of the bolter. The balance of the bolter will also bechanged during the course of a days run.

It is advisable to have a means for adjusting the balance which may beused while the bolter is in operation. My device for securing thisresult is shown within the wheel K, which is secured to turn with theshaft J. In this wheel is mounted to turn a radiallyextending rod L,which has a threaded section upon which is placed a threaded weight L,which is prevented from turning by engaging guides upon the wheel. Uponthe inner end of the rod L is secured a beveled wheel L Secured about,but so as to slide upon, the shaft J is a double-ended friction wheel.or spool M, which is adapted to be moved vertically so as to engage thebeveled ends thereof with either side of the frictionwheel L This spoolis secured to the lower end of a link M so that it cannot turn, and thelink is secured to one end of the lever M, which is pivoted upon across-bar I or any other suitable fixed support. For convenience inoperating this lever at a distance a cord M is secured to its outer endand has one end extending directly down and through the floor or to anyconvenient operating point and the other end passing first through apulley M connected to a beam N above the lever, and then downward tosaid adj usting-point. By this means the lever may be operated so as toengage either end of the spool M with the friction-wheel L and the rod Lmay be turned so as to throw the weight L nearer to or farther from thecenter, and thus change its running balance to correspond with that ofthe bolter.

In order that the miller may know just what the balance of the bolter isat any time, an indicator is provided, consisting of a bellcrank leverN, which at the bend is pivoted to one of the cross-bars I, forming theframe of the bolter, and has the upper end of the vertical arm N pivotedto the beam N or any other fixed support not a part of the bolter. Atthe outer end of the horizontal arm, which should preferably be thelonger arm in order to magnify any movement of ,the bolter, is secured awire or cord N, which extends downward to the point from which thebalance of the wheel is to be regulated. Upon this cord or wire issecured a weight N the movement of which will indicate whether or notthe bolter is running in true balance. If the bolter is balanced, thecrossbar of the frame will not be shaken, but left quiet, as willconsequently the weight N but if the bolter is out of balance thebolterframe, which includes the bar I, will be shaken, and the weight Nwill indicate this. By observing the action of this weight and bypulling upon one or the other branches of the cord M the bolter may beaccurately balanced from a distance without even seeing it.

By arranging the bolting-chambers in triangular form, suspending themfrom the angles of the triangle, and locating the operating mechanism inthe space between the said chambers a bolter having great capacity andoccupying a small space will be produced; the bolter can be easily andreadily balanced, enabling a uniform gyratory motion to be imparted tothe same without any backlash common to this class of machines;provision made for supporting three bolting-chambers from three linksand equally distributing the weight thereof on said links; aportion ofone chamber is made to serve as a housing for the cut-off of theadjacent chamber when said cut-off is withdrawn from over itsboltingcloth, and the operating mechanism can be made lighter andtherefore more readily and easily balanced.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A cut-off for bolters, comprising two superposedplates having threaded arms, and

a rod engaging both of the said arms and threaded in sections ofdifferent pitch, the arms being correspondingly threaded, whereby bothplates are moved simultaneously and at different speed s,substantiallyas described.

2. A bolter mounted to move in a circular path, a power-shaft having acrank thereon and connected with the bolter to move it,a threaded rodmounted radially of and to revolve with the power-shaft and to turn inbearings, a weight threaded upon said radial rod and held againstturning, a beveled friction-wheel secured to the inner end of the radialrod, a spool or double ended cone slidable upon the power-shaft andengageable with the friction-wheel, and means for moving said spool,substantially as described.

3. A balancing mechanism for a revolving body, comprising aradially-extending rod mounted to revolve with said body and to turn,and having a threaded section, a weight threaded upon said rod and heldagainst turning, a wheel upon the rod for turning it, and non-rotatingactuating mechanism therefor, movable into and out of engagement there*with, substantially as described.

4:. A balancing mechanism for a revolving body, comprising aradially-extending rod mounted to revolve with said body and to turn,and having a threaded section, a weight threaded upon said rod and heldagainst turning, a wheel upon the rod for turning it, a double-endedfriction device mounted at the center of revolution of the said rod andits wheel, and movable to engage opposite sides thereof with the wheel,and means for moving said friction device, substantially as described.

5. A balancing mechanism for a revolving body, comprising aradially-extending rod mounted to revolve with said body and'to turn,and having a threaded section, a weight threaded upon said rod and heldagainst turn ing, a friction-wheel upon the inner end for turning it, aspool mounted in the center of rotation of said rod and movabletransversely thereof to engage the friction-wheel on its upper or loweredge, and a lever connected with said spool to move it, substantially asde scribed.

6. A bolter, comprising three bolting-chant bers connected with eachother and arranged in triangular form, a link at each angle and by whichthe chambers are suspended, and means arranged in the space between thechambers, for imparting a gyratory motion tothe said chambers,substantially as described.

7. A bolter, comprising three bolting-chambers connected together andarranged in triangular form, a link at each angle by which the chambersare suspended, a shaft arranged in the triangular space between thechambers and provided with a crank, and a frame secured to the chambersand in which the crank of the said shaft is journaled, substantially asdescribed.

8. In a bolter, the combination with gyra venient observation point,substantially as shown and described.

10. A balance-indicator for rotary swingr 5 in g bolters comprising alever pivoted to the stationary frame of the bolter and to a fixedobject and a cord extending from said lever to a convenientobservation-point. I

FREDERICK W. BROWN.

Witn esses:

J. R. WATERS, ONA B. WATERs.

